B♭7, also called B♭ dominant seventh, contains B♭, D, F and A♭. Use the piano diagram to find the notes, hear the chord and explore its inversions.
B♭7 is a dominant seventh chord built from the B♭ major triad plus A♭, the minor seventh above B♭.
Preserve the written chord spelling shown here; keyboard equivalence does not rename the chord.
Choose a position to keep the four written notes, sounding keys, bass note, playback and print reference synchronized.
B♭7 uses 1–3–5–♭7: B♭–D–F–A♭.
B♭7 is a major triad plus a minor seventh.
Compared with B♭ major, add the minor seventh above the root.
A seventh chord has four chord tones and therefore four positions: root position plus three inversions. The slash symbol identifies the written bass note.
| Position | Symbol | Notes, low to high | Bass |
|---|---|---|---|
| Root position, current selection | B♭7 | B♭3–D4–F4–A♭4 | B♭3 |
| First inversion | B♭7/D | D4–F4–A♭4–B♭4 | D4 |
| Second inversion | B♭7/F | F4–A♭4–B♭4–D5 | F4 |
| Third inversion | B♭7/A♭ | A♭4–B♭4–D5–F5 | A♭4 |
Fingerings are not included on this page. The diagram shows note positions, not a prescribed hand shape.
Use the written notes, keyboard positions and playback without treating the diagram as a required hand shape.
Read left- and right-hand finger numbersOpen Music Theory
Supports: Dominant Seventh chord construction, written spelling and inversion principles
Scope: Supports theory and spelling only; keyboard layouts are PianoGrid examples, and no fingering is assigned.
B♭7 contains B♭, D, F and A♭.
1–3–5–♭7.
No. B♭7 uses A♭, while B♭maj7 uses A natural.
Select the four pitch classes that make B♭7, then check your answer.
This one-octave exercise checks the exact four-note pitch-class set. Order and inversion do not affect the result; missing and extra notes are reported, while fingering and live performance are not assessed.
One octave, C through B. Select a key again to remove it.
Chord tones: B♭–D–F–A♭ · Formula: 1, 3, 5, ♭7
Dots mark the notes to play. C4 is middle C. Numbers identify octaves, not fingers.